Welcome to ISC. You can't earn much money by posting in forms. You can earn by posting Articles, Jobs and Ask Expert answers. In the forum section as mentioned in #645709 sometimes, very rarely, you will be allotted CC, if your post is extraordinary and if the quality is good. But you can make some money by participating in contests and you may get some awards if your performances deserve. So try your best and I wish you the best of luck. Go ahead.